Robert Lang, MD
NPI 1871597377 · Internal Medicine Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Lang, MD is a Internal Medicine Physician provider in Grand Rapids, MI (NPI 1871597377).
Provider details
- NPI number
- 1871597377
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301061594 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
428 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 108 | $128 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 69 | $131 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 68 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 48 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 35 | $7 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 24 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 121 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 393 | 108 |
| Amlodipine Besylate | 281 | 73 |
| Lisinopril | 268 | 72 |
| Levothyroxine Sodium | 246 | 67 |
| Omeprazole | 241 | 70 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 214 | 42 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-13
- Last updated
- 2018-11-16
Frequently asked questions
- What is Robert Lang's NPI number?
- Robert Lang's National Provider Identifier (NPI) is 1871597377, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Lang's specialty?
- Robert Lang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Lang located?
- Robert Lang's practice location on file with NPPES is 1000 E Paris Ave Se Ste 100, Grand Rapids, MI 49546.
- What is Robert Lang's phone number?
- The practice phone number listed in the NPPES registry for Robert Lang is (616) 459-3158.
- Does Robert Lang accept Medicare?
- Robert Lang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Lang's NPI active?
- Yes — Robert Lang's NPI (1871597377) is active in the NPPES registry as of the last update on 2018-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.